Ke, Changxia/Konrad, Kai A./Morath, Florian (2011): Brothers in Arms. An Experiment on the Alliance Puzzle. Max Planck Institute for Tax Law and Public Finance Working Paper 2011-04 2011-04. München: Max Planck Institute for Tax Law and Public Finance.

Konrad, Kai A./Kovenock, Dan (2011): The Lifeboat Problem. Max Planck Institute for Tax Law and Public Finance Working Paper 2011-13 2011-13. München: Max Planck Institute for Tax Law and Public Finance.

Konrad, Kai A./Morath, Florian (2011): Social Mobility and Redistributive Taxation. Max Planck Institute for Tax Law and Public Finance Working Paper 2011-02 2011-02. München: Max Planck Institute for Tax Law and Public Finance.

Konrad, Kai A./Morath, Florian (2011): Aspirations of the Middle Class. Voting on Redistribution and Status Concerns. Max Planck Institute for Tax Law and Public Finance Working Paper 2011-06 2011-06. München: Max Planck Institute for Tax Law and Public Finance.

Konrad, Kai A. (2011): Aspects of Fighting in Alliances. Max Planck Institute for Tax Law and Public Finance Working Paper 2011-09 2011-09. München: Max Planck Institute for Tax Law and Public Finance.